ORACLE函数大全 ________________________________________ 作者：[本站编辑] 来源：[CSDN] 浏览：[ ] SQL中的单记录函数 1.ASCII 返回与指定的字符对应的十进制数; SQL> select ascii('A') A,ascii('a') a,ascii('0') zero,ascii(' ') space from dual; A A ZERO SPACE --------- --------- --------- ----
This document shows the use of UIDs in contactless smartcard systems. It indicates recommendations about the Random ID, mixed use of 4 byte and 7 byte UIDs in the same system, and it describes the options how to upgrade 4 byte UID systems to accept
1. UIDF0: anti-collision and selection with the double size UID according to ISO/IEC 14443-3 2. UIDF1: anti-collision and selection with the double size UID according to ISO/IEC 14443-3 and optional usage of a selection process shortcut 3. UIDF2: an
